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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#759576 | #5423. Perfect Matching | wangchunjie | AC ✓ | 874ms | 42252kb | C++14 | 1.5kb | 2024-11-18 10:12:03 | 2024-11-18 10:12:04 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N=2e5+5;
int T,n,a[N],dep[N];
map<int,int> x,y;
vector<pair<int,int>> ans,G[N];
int dfs(int u,int pa)
{
dep[u]=dep[pa]+1;
vector<int> vec;
for(auto i:G[u]){
int v=i.first,id=i.second;
if(v==pa) continue;
if(dep[v]){
if(dep[v]>dep[u])
vec.emplace_back(id);
continue;
}
int res=dfs(v,u);
if(res) ans.emplace_back(id,res);
else vec.emplace_back(id);
}
int res=0;
if(vec.size()&1) res=vec.back(),vec.pop_back();
for(int i=0;i<vec.size();i+=2)
ans.emplace_back(vec[i],vec[i+1]);
return res;
}
void solve()
{
x.clear(),y.clear(),ans.clear();
memset(dep,0,sizeof(dep));
cin>>n;
for(int i=1;i<=n;i++)
cin>>a[i];
for(int i=1;i<=n;i++)
x[a[i]+i]=1,y[a[i]-i]=1;
int cnt=0;
for(auto &i:x) i.second=++cnt;
for(auto &i:y) i.second=++cnt;
for(int i=1;i<=cnt;i++)
G[i].clear();
for(int i=1;i<=n;i++){
int u=x[a[i]+i],v=y[a[i]-i];
G[u].emplace_back(v,i);
G[v].emplace_back(u,i);
}
for(int i=1;i<=cnt;i++){
if(dep[i]) continue;
if(dfs(i,0))
return cout<<"No\n",void();
}
cout<<"Yes\n";
for(auto i:ans)
cout<<i.first<<' '<<i.second<<'\n';
}
signed main()
{
ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
cin>>T;
while(T--)
solve();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 9872kb
input:
3 6 14 22 33 11 25 36 4 100 10 98 12 4 1 3 5 7
output:
Yes 1 4 2 5 3 6 Yes 2 4 1 3 No
result:
ok 3 Cases (3 test cases)
Test #2:
score: 0
Accepted
time: 332ms
memory: 31032kb
input:
10 100000 0 -1 -2 -3 -4 -5 -2 -7 -8 -9 -10 -9 -12 13 14 15 -16 -17 -18 19 20 19 -22 -21 -20 -25 -26 -27 -28 -27 -26 31 30 29 -34 -35 -34 39 38 37 42 41 42 47 44 45 46 49 48 -53 -52 -51 -56 -55 -54 55 56 57 -58 -59 -60 61 62 63 64 65 64 67 66 69 70 73 72 73 74 73 76 75 74 79 80 81 -84 -83 -84 89 86 8...
output:
Yes 79 139 202 244 289 310 316 322 337 382 397 451 460 463 481 517 520 526 556 568 619 661 736 763 790 853 904 934 979 988 1090 1105 1162 1219 1273 1285 1294 1405 1411 1456 1459 1531 1555 1561 1588 1615 1618 1630 1651 1669 1684 1723 1738 1915 1972 2026 2029 2092 2155 2197 2290 2305 2350 2353 2419 24...
result:
ok 10 Cases (10 test cases)
Test #3:
score: 0
Accepted
time: 0ms
memory: 10544kb
input:
10 100 28761184 28761185 28761186 28761187 28761188 28761189 28761190 28761191 -20675012 -20675013 -20675014 -20675015 -20675016 -20675017 -20675018 -20675019 -20675020 -20675021 -20675022 -20675023 -20675024 -20675025 -20675026 -20675027 -20675028 -20675029 -20675030 -20675031 -36758138 -36758139 -...
output:
Yes 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 39 58 29 30 31 32 33 34 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 59 60 61 62 63 64 65 66 67 68 36 37 35 38 2 3 4 5 6 7 1 8 69 70 71 72 73 74 Yes ...
result:
ok 10 Cases (10 test cases)
Test #4:
score: 0
Accepted
time: 328ms
memory: 42252kb
input:
10 100000 -40608960 -40608959 -40608958 -40608957 -40608956 -40608955 -40608954 -40608953 -40608952 -40608951 -40608950 -40608949 -40608948 -40608947 -40608946 -40608945 -40608944 -40608943 -40608942 -40608941 -40608940 -40608939 -40608938 -40608937 -40608936 -40608935 -40608934 -40608933 -40608932 ...
output:
Yes 29329 29330 29331 29332 29333 29334 29335 29336 29337 29338 29339 29340 29341 29342 29343 29344 29345 29346 29347 29348 29349 29350 29351 29352 71754 71755 71756 71757 71758 71759 71760 71761 71762 71763 71764 71765 71766 71767 71768 71769 71770 71771 71772 71773 71774 71775 71776 71777 71778 71...
result:
ok 10 Cases (10 test cases)
Test #5:
score: 0
Accepted
time: 874ms
memory: 29972kb
input:
10 100000 0 -1 -2 3 2 5 6 7 -2 1 0 9 12 11 -8 13 8 -7 16 17 -10 19 22 21 22 23 4 -15 -18 -17 -6 -31 -14 25 32 -25 26 27 -32 31 38 -31 -32 -19 -30 -35 46 45 -48 -37 48 41 46 -43 -44 53 56 55 50 -27 52 61 62 -33 -18 19 64 45 46 -57 -8 -25 -26 -11 -22 49 -66 -65 -66 29 78 -15 74 83 12 83 14 85 86 -7 -5...
output:
Yes 28 89504 8564 26518 1121 63463 129 36817 8931 95315 61541 96991 81132 92548 41302 83637 778 34736 4360 12537 2005 99552 92893 97953 30631 58176 19622 70597 26691 37677 27149 66364 10211 67617 17075 44140 11472 57643 23176 35741 12598 95323 28519 68565 10746 21782 47710 63141 67911 89833 19087 80...
result:
ok 10 Cases (10 test cases)
Test #6:
score: 0
Accepted
time: 237ms
memory: 10292kb
input:
1000 1000 -2 0 3 4 6 7 4 7 6 9 11 9 10 12 16 13 16 17 18 20 19 19 24 22 25 23 28 25 26 27 30 32 31 34 36 37 34 37 37 40 42 43 44 45 43 44 46 45 50 48 51 49 54 55 52 55 54 57 56 61 60 61 64 65 64 67 65 66 67 68 71 73 73 75 76 77 78 75 76 78 82 79 80 81 83 83 87 88 90 89 90 93 92 93 95 94 96 96 100 97...
output:
No No No No No No Yes 6 9 16 17 18 21 22 25 27 31 32 33 35 42 47 51 62 64 72 79 82 86 90 96 101 103 107 109 111 121 127 145 147 155 157 159 164 166 169 174 176 179 191 192 195 201 204 210 223 229 230 237 244 246 252 260 262 269 276 282 292 293 294 295 296 297 301 303 304 306 309 318 325 329 336 338 ...
result:
ok 1000 Cases (1000 test cases)